Porsche 911 ITB Kit (2-bolt)

This is a complete bolt on kit that will fit Porsche boxer engines. Kit is available with several manifold options to suit 2 bolt attachment with a selection of 6 different port and throttle combinations.

Kits are built with slight taper to the whole system from the trumpet all the way to the head face, This is an important design feature for best performance.

We have 6 available sizes

1. 40mm throttles for 32mmm head ports, suites early 2.2/2.3l engines
2. 40mm throttles with 35mm head ports suite later model 2.7 engines.
3. 42mm throttle with 35mm head ports suite later model 2.7/3.0 engines
4. 42mm throttles 39mm head ports and for 3.0 engines
5. 45mm throttles 39mm head ports for modified/race 3.0+
6. 45mm throttles 41mm head ports 3.4/3.6 engines

New 3bolt version is available in the 48mm throttle size. Please see listing HERE

New long 1-piece billet trumpets are available for all sizes. This replaces the previous design of a separate spacer and trumpet. Long trumpets are only available anodized black.

The carbon rain-hats option includes all the mounting hardware and end plates for air filters. Elements (not included) are a commonly available round element that is held into an oval shape with the end plates K&N E-1450 (other cheaper brands also commonly available)

Kit includes fuel rails and slightly higher mounted injector position for improved performance. Included are all the fittings and hardware for full ICV (idle control) system using a small ICV from BMW 4cyl m44 engine.

All our testing has shown these kits to produce power gains throughout the whole rpm range, not only to the top end.